Window-sash lock-stop.



H. BARNES.

WINDOW SASH LOCK STOP.

APPLICATJON man MAY 26. 1915.

1,21 9,424. Patented Mar. 20, 1917.

WIT/VESSfS: l/Vl/E/VTOR Z13 ATTORNEY HENRY BARNES, 0F BROOKLYN, NEW YORK.

WINDOW-SASH LOCK-STOP.

Application filed May 26, 1916.

To all whom it may concern:

Be it known that I, HENRY BARNES, citizen of the United States, residing at Bro-oklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Window Sash Lock-Stops; and I do hereby declare the following to be a full, clear, and exact clescription of the invention, such as will enable others skilled in the art to which it appertains, to make and use the same.

My invention relates to an improved window sash lock stop. The object of my invention is to locate the sash at a predetermined point to form an'opening at either the top or bottom, or both top and bottom of a window for ventilation, and as a means of safety against intruders as well as a preventive against children falling out of the window.

Referring to the drawings:

Figure l is a full sized view of the device;

Fig. 2 is a reduced view of the device attached to one of the stiles of the upper sash and showing the windows opened an equal area at the top and bottom and locked against further relative movement.

Fig. 3 is an enlarged horizontal sectional view of the stile of the upper sash, and a broken sectional view of the glass, also a view of the device attached to the stile, and in one of its neutral positions;

Fig. a is an enlarged view of a portion of the stile of the uppersash, broken sectional view of its glass, a portion of the stile of the lower sash, and vertical sectional view of its meeting rail, and broken sectional view of the glass, also a view of the device in operative position on line 4.4E of Fig. 2; and

Fig. 5 is an enlarged horizontal sectional view of the stile and portion of the glass of the upper sash, a portion of the meeting rail of the lower sash, and showing the device in one of its neutral inoperative positions.

1 represents the window casing, 2 the upper sash, 3 its glass, e the lower sash, and 5 the glass therefor.

The device is composed of a bracket made of a single piece of metal bent so as to form the central eye 6 standing off from one side Specification of Letters Patent.

Patented Mar. so, 1917.

Serial No. 99,950.

of the bracket and in which the arm 7 is pivoted. The free ends or sides 8 and 9 of the bracket are brought together and holes 10 formed therethrough to receive the screws 11 by which said bracket is secured to the stile 12 ofthe upper sash, with the eye 6 projecting inward.

l/Vhile these closed sides of the bracket could be let into the stile so as to clear the lower sash when the arm 7 is in a neutral position, they can be made of material thin enough-as shown for this purpose, and thus avoid marring the stile by an inexperienced person. It will be noted, Figs. 3 and 5, that forming the eye 6 on one side of the bracket and arranging it inward, the outer surface of the eye is flush with the outer surface of the side 9 for the free passage of the lower sash.

Referring to Fig. 2, it will be noted that the device is fixed to the upper sash and when said sash is lowered, and the lower sash raised until the rubber buffer 18see also Fig. lcontacts with the meeting rail 14 of the lower sash, the openings 15 and 1.6, at the top and bottom of the window may be regulated to equal area. The device, however, can be located in any position desired. When the arm 7 of the device is in the position shown in Figs. 2 and 4, the point of the screw 17 is forced into the hole 18, Fig. 1, of the bracket to lock said arm firmly in place, and as the device is mainly intended to provide ventilation, both at the bottom and top of the window, the device cannot be unlocked from the outside when said openings are large enough to afford the necessary ventilation, nor need the opening at the bottom be large enough for a child to creep through.

When the device is not in use, it is swung around against the inner face of the stile 12 as shown in Fig. 5. The buffer 13 serves the purpose of a shock absorber when suddenly brought into contact with the meeting rail of the lower sash.

Having thus described my invention, what I claim is;

A window sash lock comprising a bracket adapted to be attached to the stile of the upper sash and provided with an opening, an arm pivotally mounted in the bracket and adapted to be moved into and out of the path of the lower sash, a locking screw fitted in and carried by the said pivoted arm and adapted to be forced into engagement With the opening of the bracket to lockthe arm in the path of the meeting rail of the lower sash to thereby limit the relative opening movement of the sashes.

In testimony whereof I afiix my signature 1n presence of two wltnesses.

HENRY BARNES.

Witnesses:

Jos. K. ELLENBOGEN, HARRY HORN.

Copies of this patent may be obtained for live cents eah,'by alii'drssing the Commissioner of Iatents, Washington, D. O. 

